Vibration motor maintenance of mud cleaner

The drilling mud cleaner, also called desander and desilter assembly, mainly consists of three parts including desander, desilter and the underflow shaker screen. It can achieve separation of two stage with the hydrocyclone mounted over the shale shaker. Compared with the independent desander and desilter, the product has much higher working efficiency. Same as the shale shaker in function, the equipment is designed rationally with compact structure, small volume and powerful performance.

Vibration motor maintenance of mud cleaner:

(1) Clean dust on shell regularly.
(2) Before operating, the bolts must be checked to confirm whether there is loose or not. Otherwise, we must screw bolts tight before running shaker.
(3) Inspect the cable, whether it is worn, held down, crushed, etc.

(4) The vibration motor should be under good lubrication during operation motors before being fixed on shaker, the bearing is filled with SKF specific lubricate grease, the temperature range is -40 ~ 200℃.

Vacuum degasser removing little invaded gas

Drilling fluids vacuum degasser actually is used to remove little invaded gas in drilling mud. It will be set between shale shaker and mud cleaner/desander. Vacuum degasser separates the gas that migrates into the drilling fluids by the function of vacuum pump and vacuum tubular tank. If the gases does not been separated from the drilling fluids, it may cause well kicked, and increase the total financial cost and timing cost of the drilling project. If there is no gas migrating into the drilling fluids, the vacuum degasser would work as a big mud agitator, to enhance the shearing rate of the drilling mud.

Features of Vacuum Degasser:
1. Water ring vacuum pump always remains isothermal state in operation and it is safe, reliable in inflammable and explosive gas suction.
2. Mud sprays onto the walls at a high spped and gas bubbles break completely with a satisfactory degassing efficiency
3. Master motor is biased to form a lower whole set center.
4. Belt transmitting avoids reducer mechanism complexity.
5. Gas-liquid separator avoids  water/gas to be discharged simultaneously which makes gas outlet pipe always be smooth. At the same time, it can supply water for vaccum pump to save water consumption.
6. Suction pipe inserts into mud tank and can function as a heavy-power agitator in air.


As an important device of oil & gas drilling fluids solids control system, vacuum degasser separates the gases that migrates into the drilling fluids by the function of vacuum pump and vacuum tubular tank. If the gases does not been separated from the drilling fluids, it may cause well kicked, and increase the total financial cost and timing cost of the drilling project. If there is no gas migrating into the drilling fluids, the vacuum degasser would work as a big mud agitator, to enhance the shearing rate of the drilling mud.

It is necessary to install a vacuum degasser for their removal from the drilling fluids since the invading gases may impact mud properties, cause safety risks and affect the lifespan of some equipment. Vacuum degasser has found wide application in drilling fluids circulating system, forcing the gases(such as, CH4, H2S, etc.) out of entrained drilling fluids(mud) so that mud properties(including density, viscosity) are well preserved.

Shaker screen- Drilling shale shaker wearing part

Shale shaker screen is wearing parts of the drilling fluid shale shaker for the oilfield drilling mud system, mainly divided into soft sieve shaker screen, sieve plate type shale shaker screen, frame plate type shaker screen, wave shaker screen. Product characteristic is wear resistance, wearability, rating of temperature, low cost, easy disassembly, conductivity (powder) liquid, trapping (dreg) effect is good, etc.

The shaker screen is equipped on the basket of shale shaker, with three or four pieces screen panels, while the screen basket is driven by two sets of vibration motors which are mounted on the top of shale shaker with synchronization and contrary rotation. There exists one piece of eccentric block in the vibration motor. When motor works, the eccentric block also rotate. As there are two sets of vibration motors working synchronized, at some point, the vibration force that generated by the eccentric blocks is sum of these two blocks effect force. While at some point, the vibration force of motors would be zero.